mlppp-link termination issue

mlppp-link termination issue

[Abdul J]

Hi,

I am using the ppp-2.4.2 version on a Redhat machine
with Kernel 2.4.20. I use multilink option to combine
(inverse multiplex) a number of satellite links to
aggregate bandwidth. This is a test setup and I
control both ends of the PPP connection.

I observed that when the first link drops
(terminated/disconnected) the ppp0 interface is
dropped even though other links of the bundle are
still connected. This results in having to restart all
the connections when the first (primary) link of the
bundle disconnects.

Though this behaviour is not in accordance with RFC
1990, the pppd man page (of ppp-2.4.2) acknowledges
this. 
"Currently, if the first pppd terminates (for example,
because of a hangup or a received signal) the bundle
is destroyed"

My question is: Are there any plans to fix this in
future releases of the ppp-package or are there any
other ppp implementations in Linux that do not suffer
from this problem? Is there any way to work around
this problem.

Please share your comments

Thanks
Abdul


		
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RE: mlppp-link termination issue

[Abdul J]

Hi,

I see. I did not find any patches either. Thanks for
point out the previous post. I am copying this message
to Piet Louw as well. Piet, did you find any success
in dealing with the MLPPP primary link drop problem?

If anyone develops a patch, I would be more than happy
to rigorously test it (at user level) as I have a
dedicated multilink setup with 8 links.

Thanks,
Abdul

--- Steve Drew <steve.drew@empics.com> wrote:

> Hi,
> 
> 	I use a similar setup of multilink PPP, I've not
> found any
> patches related to the improvements to pppd to make
> it RFC1990 compliant
> (re the first channel terminates).
> 	There was a post about 6 weeks ago, where someone
> (Piet Louw
> [ploubser@thepub.co.za]) was going to look into it,
> but there were no
> further posts from him.
> 
> Steve
> -----Original Message-----
> From: linux-ppp-owner@vger.kernel.org
> [mailto:linux-ppp-owner@vger.kernel.org] On Behalf
> Of Abdul J
> Sent: 15 October 2004 19:06
> To: linux-ppp@vger.kernel.org
> Subject: mlppp-link termination issue
> 
> Hi,
> 
> I am using the ppp-2.4.2 version on a Redhat machine
> with Kernel 2.4.20. I use multilink option to
> combine
> (inverse multiplex) a number of satellite links to
> aggregate bandwidth. This is a test setup and I
> control both ends of the PPP connection.
> 
> I observed that when the first link drops
> (terminated/disconnected) the ppp0 interface is
> dropped even though other links of the bundle are
> still connected. This results in having to restart
> all
> the connections when the first (primary) link of the
> bundle disconnects.
> 
> Though this behaviour is not in accordance with RFC
> 1990, the pppd man page (of ppp-2.4.2) acknowledges
> this. 
> "Currently, if the first pppd terminates (for
> example,
> because of a hangup or a received signal) the bundle
> is destroyed"
> 
> My question is: Are there any plans to fix this in
> future releases of the ppp-package or are there any
> other ppp implementations in Linux that do not
> suffer
> from this problem? Is there any way to work around
> this problem.
> 
> Please share your comments
> 
> Thanks
> Abdul
> 
> 
> 		
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> 
> 



		
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